Fuel System

Question 1

How many fuel tanks does the CRJ have?

Answer 1

5

2 main

1 center

2 collector tanks integral to the center tank.

Question 2

How much fuel can the CRJ carry?

Mains?

Center?

Collector (gallons)

Answer 2

Under presure refueling 14,518 lbs of fuel

Under gravity fueling 13,906 lbs of fuel

Each main tank can hold 4760lbs

The center tank 4998 lbs

Collector tanks 10 gallons

Question 3

What does a yellow pump indication mean?

Answer 3

A pump has failed or is not powered.

Question 4

Why does a fuel filter turn amber?

Answer 4

It has experienced a fuel presure drop across the filter.

Question 5

How does fuel progress from the center tanks to the engine.

Answer 5

From the main tank via transfer ejectors the fuel is moved to the main tanks. From the tanks via Scavenger injectors the fuel is moved to the collector tanks. Next the Main injectors transfer fuel from the collector tanks to the engine. Then the engine driven fuel pump to the injectors.

Question 7

What causes a “Fuel Imbalance” caution message.

Answer 7

When ever there is a difference between each main tank of 800 lbs or more.

Question 8

When are fuel boost pumps activated

Answer 8

The fuel boost pumps activate when the fuel PSI drops below 9 PSI.